A generator includes an internal combustion engine including an engine block including a cylinder including a piston, a crankshaft configured to rotate about a crankshaft axis in response to movement by the piston, and a spark plug configured to periodically generate a spark to ignite fuel in the cylinder to control the movement of the piston. The generator further includes an alternator including a rotor and a stator, the rotor configured to rotate with the rotation of the crankshaft to generate alternating current electrical power, a controller configured to control a rate of fuel supply to the internal combustion engine, and a switch configured to selectively enable the flow of a first type of fuel into the cylinder and disable the flow of a second type of fuel, wherein the controller is configured to receive an indication of a fuel type based on a position of the switch.

An engine device including: an intake manifold (67) configured to supply air into a cylinder (77); a gas injector (98) configured to mix fuel gas with air supplied from the intake manifold (67), and supply mixed gas to the cylinder (77); an igniter (79) configured to ignite, in the cylinder (77), premixed fuel obtained by pre-mixing the fuel gas with the air; and a control unit (73) configured to execute a combustion control of a premixed fuel based on the output signal indicative of an output from the engine device. When the air amount is determined to be insufficient and when the output signal is lost, the control unit (73) estimates an output signal based on the fuel gas injection amount from the gas injector (98), and executes the combustion control based on the estimated output signal.

An engine device including: an intake manifold (67) configured to supply air into a cylinder (77); a gas injector (98) configured to mix fuel gas with air supplied from the intake manifold (67), and supply mixed gas to the cylinder (77); an igniter (79) configured to ignite, in the cylinder (77), premixed fuel obtained by pre-mixing the fuel gas with the air; and a control unit (73) configured to execute a combustion control of a premixed fuel based on the output signal indicative of an output from the engine device. When the air amount is determined to be insufficient and when the output signal is lost, the control unit (73) estimates an output signal based on the fuel gas injection amount from the gas injector (98), and executes the combustion control based on the estimated output signal.

A gaseous fuel delivery system includes a regulator valve having an inlet adapted to be connected with a high pressure source of a gaseous fuel such that the regulator valve lowers the pressure of the gaseous fuel from the high pressure source. A control valve has an inlet connected to the outlet of the regulator valve, and wherein the control valve is operable to control the flow of fluid between the inlet and outlet of the control valve. A cut off valve has an inlet connected to the outlet of the control valve, and wherein the cut off valve is operable between a first state, wherein flow of fuel is permitted to flow between the inlet and an outlet of the cut off valve, and a second state, wherein the flow of fuel is prevented from flowing between the inlet and the outlet of the cut off valve.

A hydrogen intake assembly for a hydrogen internal combustion engine characterized in that the hydrogen intake assembly includes at least one air intake manifold comprising an air intake pipe comprising at least one air inlet and air outlets, air intake runners comprising air inlets and air outlets, a spacer having a wall defining an inner chamber receiving a mixture of air, water and hydrogen and comprising air inlets and mixture outlets delivering said mixture, a water rail comprising at least one water inlet and water outlets, said water outlets being embedded in the wall of the spacer and a hydrogen rail comprising at least a hydrogen inlet and hydrogen outlets.

A hydrogen intake assembly for a hydrogen internal combustion engine characterized in that the hydrogen intake assembly includes at least one air intake manifold comprising an air intake pipe comprising at least one air inlet and air outlets, air intake runners comprising air inlets and air outlets, a spacer having a wall defining an inner chamber receiving a mixture of air, water and hydrogen and comprising air inlets and mixture outlets delivering said mixture, a water rail comprising at least one water inlet and water outlets, said water outlets being embedded in the wall of the spacer and a hydrogen rail comprising at least a hydrogen inlet and hydrogen outlets.

A compression ignition engine provides a main injector and a second pilot injector producing a spray passing over an igniter producing a pilot flame assisting in ignition of the main injector spray.

A compression ignition engine provides a main injector and a second pilot injector producing a spray passing over an igniter producing a pilot flame assisting in ignition of the main injector spray.

The present invention relates to a kit for an LPG fuel for petrol run engines and in particular, a kit of electronic and hydraulic components for the realization of a dual fuelling LPG/petrol system (100) particularly suitable for outboard engines of boats navigating in waters with high salt content. Said kit includes a tube-bundle heat exchanger (10) and a pressure regulator (20) separated one from the other and made of antioxidant materials and devices. The heat exchanger (10) is provided at its end with two respective sacrificial anodes (12b, 11b) for the protection from corrosive galvanic currents and with one temperature sensor (11c) placed at one of said ends. The kit also includes a plurality of electrohydraulic LPG injectors (I) and an electronic control unit (CE) set to manage and adjust the operation of such injectors (I), of the pressure regulator (20) and of a plurality of other devices. Said kit also includes an electronic commutator (SW) set for a bilateral electrical connection with the electronic control unit (CE) and includes a switch for the commutation from one feeding mode (LPG) to another feeding mode (petrol) and vice versa.

Diesel engines modified to be fuelled with gaseous fuels experience problems with knocking and pre-ignition, limiting the compression ratio and efficiency of the engine. A new combustion chamber for a gaseous fuelled internal combustion engine, in which the combustion chamber is defined by a cylinder head, a bore in a cylinder block and a piston reciprocating in the bore, comprises a piston portion of the combustion chamber defined by a recessed shape in a piston crown; and a head portion of the combustion chamber defined by a recessed surface in the cylinder head. A ratio between the piston portion of combustion chamber volume and the head portion of combustion chamber volume is in a range of 0.7 to 1.3.